package cn.yiya.shiji.views;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;

import cn.yiya.shiji.R;

public class ClearEditText extends EditText implements
        OnFocusChangeListener, TextWatcher {
    private Drawable mClearDrawable;
 
    public ClearEditText(Context context) {
    	this(context, null); 
    } 
 
    public ClearEditText(Context context, AttributeSet attrs) {
    	this(context, attrs, android.R.attr.editTextStyle);
    } 
    
    public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }
    
    
    private void init() { 
    	mClearDrawable = getCompoundDrawables()[2];
        if (mClearDrawable == null) { 
        	mClearDrawable = getResources() 
                    .getDrawable(R.mipmap.emotionstore_progresscancelbtn);
        } 
        mClearDrawable.setBounds(-20, 0, mClearDrawable.getIntrinsicWidth() - 20, mClearDrawable.getIntrinsicHeight());
        setClearIconVisible(false); 
        setOnFocusChangeListener(this); 
        addTextChangedListener(this); 
    }

    public void setClearImage (Drawable drawable) {
        mClearDrawable = drawable;
        mClearDrawable.setBounds(-20, 0, mClearDrawable.getIntrinsicWidth() - 20, mClearDrawable.getIntrinsicHeight());
        setClearIconVisible(false);
    }
 
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (getCompoundDrawables()[2] != null) { 
            if (event.getAction() == MotionEvent.ACTION_UP) {
            	boolean touchable = event.getX() > (getWidth() 
                        - getPaddingRight() - mClearDrawable.getIntrinsicWidth()) 
                        && (event.getX() < ((getWidth() - getPaddingRight())));
                if (touchable) { 
                    this.setText("");

                    InputMethodManager imm = (InputMethodManager)getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(this.getWindowToken(),
                            InputMethodManager.HIDE_NOT_ALWAYS);
                } 
            } 
        } 
 
        return super.onTouchEvent(event); 
    } 
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus) { 
            setClearIconVisible(getText().length() > 0); 
        } else { 
            setClearIconVisible(false); 
        } 
    } 
 
    protected void setClearIconVisible(boolean visible) {
        Drawable right = visible ? mClearDrawable : null;
        setCompoundDrawables(getCompoundDrawables()[0],
                getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
    } 
     
    @Override
    public void onTextChanged(CharSequence s, int start, int count,
                              int after) {
        setClearIconVisible(s.length() > 0); 
    } 
 
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count,
                                  int after) {
         
    } 
 
    @Override
    public void afterTextChanged(Editable s) {
         
    } 
    
    public void setShakeAnimation(){
    	this.setAnimation(shakeAnimation(5));
    }
    
    public static Animation shakeAnimation(int counts){
    	Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
    	translateAnimation.setInterpolator(new CycleInterpolator(counts));
    	translateAnimation.setDuration(1000);
    	return translateAnimation;
    }

}
